Main Analysis

Comparison of Treatment Avg at Samples

Table: Summary Statistics
comparison mean(difference) max(difference) sd(difference)
rubro vs substrate -0.0022381 5.5 0.5922385
acre vs substrate -0.4685714 4.0 0.8531867

Temperature Differences by Hour

Table: Difference Score Counts for Sedum rubrotinctum
counts rubro - substrate Percent (%) rubro
negative/colder 615 36.607
positive/hotter 507 30.179
zero/same 558 33.214

Table: Difference Score Counts for Sedum acre
counts acre - substrate Percent (%) acre
negative/colder 1355 80.650
positive/hotter 181 10.770
zero/same 144 8.571

Comparison of Temperatures by Hour

Daily Temperature Ranges

Table: Summary of Mean DTR for Each Treatment
mean(rubro_range) mean(acre_range) mean(soil_range)
17.52583 16.65222 18.02583

Linear Models for Treatment vs Control

Linear Model Summary Statistics: soil ~ sedum rubro
term estimate std.error statistic p.value
(Intercept) -0.2214027 0.0396301 -5.586738 0
Sedum.rubro 1.0120918 0.0019980 506.562001 0

Linear Model Summary Statistics: soil ~ sedum acre
term estimate std.error statistic p.value
(Intercept) -0.6476698 0.0512635 -12.63413 0
Sedum.acre 1.0619192 0.0026596 399.27407 0

Linear Model Summary Statistics
term estimate std.error statistic p.value
(Intercept) 18.496311 0.1727703 107.057250 0
rubro.vs.substrate -2.765121 0.2918090 -9.475793 0

Linear Model Summary Statistics
term estimate std.error statistic p.value
(Intercept) 16.185584 0.1647357 98.25184 0
acre.vs.substrate -4.944637 0.1692780 -29.21016 0

Normality Tests

## 
##  Shapiro-Wilk normality test
## 
## data:  treat_avg$Sedum.rubro
## W = 0.92072, p-value < 2.2e-16

## 
##  Shapiro-Wilk normality test
## 
## data:  treat_avg$Sedum.acre
## W = 0.92854, p-value < 2.2e-16

Transformed Normality Tests

## 
##  Shapiro-Wilk normality test
## 
## data:  rubro_transform
## W = 0.94887, p-value < 2.2e-16

## 
##  Shapiro-Wilk normality test
## 
## data:  acre_log
## W = 0.97153, p-value < 2.2e-16

When Ambient > 25 degrees C (Interior T)

Table: Summary of High (>25) Ambient Temperatures
Treatment count max min range mean median sd
bare substrate 132 39.5 15.5 24.0 26.44697 28.25 8.952218
sedum acre 132 37.5 15.5 22.0 25.76515 28.75 8.362366
sedum rubrotinctum 132 39.0 15.5 23.5 26.45455 29.25 8.780499